How Carefully Executed Network Theory Informs Invasion Ecology.
How Carefully Executed Network Theory Informs Invasion Ecology.
复制标题
精心执行的网络理论如何为入侵生态学提供信息。
DOI：
10.1016/j.tree.2019.01.014
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发表时间：
2019
影响因子：
16.8
通讯作者：
G. Barabás
中科院分区：
文献类型：
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作者：
A. Rossberg;G. Barabás
在最近对TREE的贡献中，Hui和Richardson [1]（H&R）认为开放动态网络的生态学应该在告知入侵生态学方面发挥更突出的作用。不幸的是，他们提出的数学例子中的不准确性导致了在更仔细的检查中难以支持的结论，包括那些基于May稳定性理论在此背景下的应用的结论（参见在线补充材料）。但他们的中心点仍然有效。事实上，网络生态学中有几个已知的结果直接回应了H&R提出的问题。在这里，我们给出的例子解决：居民种群的入侵者的反应，确定入侵的机制，以及栖息地和宿主社区在确定入侵successful.Ecological网络理论的相对重要性成为一个特别强大的工具，告知入侵生态学，如果我们把注意力集中在生态社区的结构不稳定性是限制物种丰富度。这些群落对扰动非常敏感，以至于每一次新的入侵平均都会导致另一个物种的灭绝[2，3]。这种现象有多普遍仍然是一个讨论的问题[4]，但一些证据表明，对于开放的地方社区，这种饱和可能是常见的[3，5-7]。大多数理论在这方面考虑的限制，我们将在这里，入侵之间的时间是长的人口动力学弛豫时间相比。
In a recent contribution to TREE, Hui and Richardson [1](H&R) argue that the ecology of open dynamic networks should play a more prominent role in informing invasion ecology. Unfortunately, inaccuracies in the mathematical example they present to illustrate this point led to conclusions that are difficult to support upon closer inspection, including those based on application of May’s stability theory in this context (see supplemental material online). But their central point remains valid. Indeed, there are several known results from network ecology that directly respond to questions raised by H&R. Here we give examples addressing: the responses of resident populations to invaders, mechanisms determining invasibility, and the relative importance of habitat and host community in determining invasion success.Ecological network theory becomes a particularly powerful tool to inform invasion ecology if we focus our attention on ecological communities where structural instability is limiting species richness. These communities are so sensitive to perturbations that each new invasion leads to extinction of one other species on average [2, 3]. How general this phenomenon is remains a matter of discussion [4], but several lines of evidence suggest that for open, local communities such saturation may be common [3, 5–7]. Most theory in this context considers the limit, as we shall here, that the time between invasions is long compared with population-dynamical relaxation times.